According to the Cybersecurity & Infrastructure Security Agency, the U.S. has 16,000 public wastewater treatment systems. In addition, the EPA estimates that over 20% of U.S. households are on an individual septic system or community cluster system. The wastewater that comes from these systems requires careful treatment to remove pathogens, pollutants, and solid waste. 

When a wastewater treatment facility gets wastewater from the sewer system or trucks that pump it out of septic tanks, it needs to be screened to remove plastic and other hard waste like branches, bones, etc. It must have the sludge and fats/oils/grease (FOG) removed, and the remaining wastewater must be carefully tested until it meets EPA guidelines. Only then can it return to a body of water or water treatment plant for reuse. 

Wastewater clarification and sanitizing is essential to prevent the spread of disease. It also prevents contamination in lake and river water, which can help algae blooms thrive and harm aquatic animals and animals that use that water for swimming or drinking. It keeps bacteria from entering into the meat of shellfish that people eat. To make sure water is clarified correctly, water treatment plants use mechanical or chemical clarification, and each has pros and cons.

How Does Mechanical Clarification Work?

Mechanical clarifiers are tanks where wastewater settles after passing through filters that capture solids like fat deposits, menstrual products, plastic wrappers, etc. Skimmers run over the top of the tank in continual circles picking up floating waste, while sludge is pushed to a central hopper in the bottom of the tank to be pumped out.

Water can be further treated using filters and UV treatment to remove impurities and contaminants. Activated charcoal is one filtration material, but plants have also had success with coconut fibers, sand, and peat.

Pros and Cons:

• Pro – It’s simple and doesn’t require fluctuating levels of chemical additives.
• Pro – It can be twice as fast.
• Pro – It’s one of the most cost-effective options, especially in areas where people are already stretched thin financially.
• Pro – It’s better for the environment as no chemicals are being used.
• Con – Produces more sludge that must then be managed.
• Con – Lightweight particles may be harder to capture.
• Con – Clarifier tanks take up more space, which can be hard in areas where there is limited land.

How Does Chemical Clarification Work?

Chemical clarification involves the use of a chemical to cause suspended particles to clump together, which forms larger solids that float to the surface. That makes them easier to remove because they settle faster than small particles. 

With chemical clarification, processes known as coagulation and flocculation take place. The chemical additives, such as caustic soda, lime, iron, aluminum salts, and polymers are mixed in causing the suspended particles to coagulate. As they bind (flocculation) the larger clusters, called flocs, float to the surface for easier removal. This method also has pros and cons.

• Pro – The floating suspended solids are easily removed, which leads to cleaner water.
• Pro – A smaller footprint is needed, which is good if your plant has limited space.
• Pro – It’s better at capturing tiny particles that often get missed in mechanical clarification because they bind together.
• Con – Costs more than mechanical due to the cost of chemicals, and an increase in incoming wastewater will require quick adjustments to the amount of chemicals used, so costs can increase as workers put in more hours and increase the use of chemicals.
• Con – It’s a more complex process, which means wastewater treatment plant operators may need extra training.
• Con – The chemicals can be harmful to the environment, so they must be removed before treated wastewater’s release and carefully handled if there is an accidental spill.
• Con – The amount of sludge increases, so you have to have a sludge management plan in place.

Which Method Is Best for Your Municipality?

Which is best for your wastewater treatment facility? Consider these five points.

The Characteristics of the Wastewater Your Facility Treats

What are the main qualities and characteristics of the wastewater you treat? Chemical clarification is considered to do a better job of removing contaminants like heavy metals. If you treat a larger volume of industrial wastewater, it’s something to consider.

Your Municipality’s Budgetary Constraints

As is true in most of life, you have to consider the budget. While you might prefer the idea of chemical clarification, consider the costs of both options and the average salaries of people in your municipality. If you drastically increased water and sewer bills, could they afford it or would they be at risk of financial hardship?

The Discharge Standards You Need to Meet

When you are permitted to operate a wastewater treatment plant, the EPA’s permit has discharge standards you must meet. If you fail at that requirement, the fines can be steep. Consider which of the two clarification methods ensures you meet those standards in the most cost-effective manner possible.

The Size of Your Plant and Availability of Additional Land

How much land does your facility have? If you opt for mechanical clarification, the tanks take up space. As new homes are built and businesses come in, new equipment may become necessary to keep up with the increased flow rates. Do you have the space available for new clarifiers? If you don’t have a lot of space, mechanical clarification might not be feasible.

Your Area’s Environmental Concerns

What are some of the concerns already impacting the environment in your area? As you release treated wastewater to rivers, lakes, the ocean, etc., you need to make sure you’re not accidentally discharging water with higher levels of dissolved salts and other chemicals used during clarification.

Finally, you have to consider environmental concerns regarding sludge. When you use chemical clarification, you’ll have more sludge. If you only have one or two landfills in the state and they’re already reaching capacity, you’d need to find another way to dispose of the sludge to avoid straining other city and town services. 

You could consider incinerating it or processing it for fertilizer, but that’s more work, which means more staff, and that can mean higher costs for your district. You have to consider all of that when determining the best option for your community and budgetary constraints.

Lakeside Equipment has been in the water clarification field for close to 100 years. Reach us online or over the phone to discuss your plant’s size, wastewater treatment needs, and your community’s budget. We’re experts in wastewater treatment processes and equipment and can help you find an efficient, cost-effective solution.

Since their development, wastewater treatment practices have come a long way, but they also can be incredibly wasteful when it comes to energy consumption and unplanned raw sewage releases. Working on environmentally sustainable practices is essential. The less of a footprint that’s left, the better it is for future generations.

There are three goals to keep in mind when it comes to being environmentally sustainable.

• Lower energy consumption
• Lower emissions
• Increase the use of renewable resources

It’s estimated that about 80% of the world’s municipal wastewater ends up in rivers, lakes, and the ocean each year. It might happen if a sewer pipe breaks, a sewer system and stormwater runoff system are intertwined, or flooding occurs. To prevent that, wastewater treatment facilities need to treat water quickly, correctly, and with as little impact on the environment as possible. Sustainable practices and the right equipment upgrades make a big difference. That’s where the RO-TEC drum comes in.

The Environmental Concerns That Go Hand in Hand With Wastewater Treatment

Wastewater treatment steps consume a lot of energy. While there are ways to recover some of the electricity your plant consumes, such as converting methane to usable fuel or adding solar panels, the addition of equipment that uses less energy is also beneficial.

The Department of Energy estimates that U.S. wastewater treatment plants consume over 30 terawatt-hours of electricity each year, around $2 billion annually. There are over 16,000 public wastewater treatment plants, which means each plant consumes about $125,000 in electricity yearly, and that’s just electricity. 

Add in the heating fuel or gas needed to heat a facility, any cost for air conditioning in labs and offices, and the costs of raw sewage spills from breakdowns, floods, or broken underground pipes following a deep freeze, an earthquake, or age. It’s a strain on resources and finances.

The harder you work to treat wastewater, the more energy is consumed. And that circles back to higher energy consumption and bigger bills. If you use chemicals to sanitize wastewater, there’s the risk of chemical pollution, too, so your employees have to take every possible precaution to ensure chemicals are below maximum levels before treated wastewater is released into a body of water. All of this affects the environment and your plant’s operating costs.

Other concerns for the environment come from the sludge that’s generated as you treat wastewater. The more you can screen from the wastewater in the earliest stages, the quicker it is to treat the wastewater. However, you have to have a plan in place for that sludge, too. 

Some plants incinerate it, which means the emissions from the furnaces must be carefully filtered to limit air pollution. Incineration of waste can increase greenhouse gases if filtration is not carefully monitored. This is why many plants are looking into using the methane their plants produce to use it for energy for heating or cooling their buildings.

Others haul it to landfills where any diseases mix into the decomposing trash and could put wildlife at risk. Not only that but since lined landfills became a requirement in the late-1970s, there hasn’t been enough time to determine their effectiveness. They’re fine for now, but no one knows if those liners will still be doing their job 100 years later.

What Is a RO-TEC Drum?

RO-TEC drums screen incoming wastewater using the flow of the water to begin the rotational movements of the drum screen. Because the water flow moves the drum, it doesn’t consume much electricity, which reduces demand on the grid. 

It’s also self-cleaning, which frees up workers for other important tasks. As the drum rotates, a raised scraper section thoroughly removes particles where they go into the sludge you compost, incinerate, or bring to a landfill. 

When it comes to maintenance, RO-TEC drum screens don’t require a lot of labor. They don’t wear out quickly due to the stainless-steel construction, and they require very little maintenance over time. If they do, the drive is above water level, which makes repairs and maintenance easier to manage.

One of the most common uses for RO-TEC drum screens is when pulling water from a lake or river for water treatment. The sizing of the screen protects fish and other aquatic life from getting drawn into the system. They’re versatile and work well in both water treatment and wastewater treatment.

When screening wastewater, the fine and ultra-fine screens do a better job at cleaning smaller particles, which makes them a good choice for areas where industrial wastewater is a concern. They’re often used for the pre-treatment of industrial wastewater due to their energy efficiency and pre-treating ability.

How Does It Help Boost Environment Sustainability?

RO-TEC drum screens use water flow for movement rather than electricity, which lowers energy consumption. Less energy use helps the environment. If you add renewable energy sources like solar or wind power, it further lowers the impact your facility has on the environment.

As these drum screens capture more particles with the fine or ultra-fine screening, they also clean water better from the start, which speeds up water treatment and gets it ready for other sustainable practices, such as water reuse. With water sources in some areas drying up, reuse of water is an important practice. 

People might be nervous about drinking water that comes from the sewer system. The reality is that treated wastewater that then is treated for potable water sources is just as clean as water that’s drawn from the river, ocean, or lake and turned into drinking water.

Plus, wastewater that passes through a RO-TEC drum screen is going to require fewer chemicals, if your plant uses them. More sludge and particles come out of the wastewater, making it easier to treat further down the line.

The final consideration any wastewater treatment plant board needs to consider is the cost of treating wastewater. As area residents and business owners pay for the wastewater treatment in their municipality, cost control is essential. According to a Statista study, the cost of wastewater treatment can be substantial. In 2021, the five cities with the highest wastewater treatment prices per 1,000 gallons were:

• Seattle, Washington – $21.65
• Baltimore, Maryland – $11.40
• Richmond, Virginia – $10.40
• Austin, Texas – $10.37
• Miami, Florida – $9.24

If you consider the estimate that one person produces about 100 gallons of wastewater per day, those treatment costs add up quickly. Every step you take to lower wastewater treatment costs helps the community you serve. Efficient wastewater treatment equipment and processes are the first step. Low-maintenance equipment like a RO-TEC drum screen also helps lower operating costs.

Lakeside Equipment specializes in RO-TEC drum screens and many other components that help make wastewater treatment an efficient, effective process. Reach out online or by phone to learn more.

In the U.S., municipal wastewater treatment facilities use up over 30 terawatt-hours of electricity every year. Average costs are over $2 billion. The worst part is that electricity is about 25% to 40% of a plant’s annual operating budget. Lowering energy consumption should be every municipality’s goal. 

The key to lowering energy costs in wastewater treatment is in the equipment. Spring rains can lead to problems with flooding, and any raw sewage release is going to be costly. Flowmaker mixers and pumps will do a lot to help you cut down costs and help area residents and businesses save money.

The Many Benefits of Reduced Energy Consumption

Reducing energy consumption means lower monthly bills. That’s one of the biggest benefits, and it’s one that the people in your district will appreciate. There’s more to it than just reduced electricity bills.

Maintenance Costs Decrease

When you modernize equipment, pay attention to how many pieces of equipment are above the water level. That makes it easier for maintenance workers to address issues, if and when they arise. Less maintenance means lower bills.

Reduced Impact on the Environment

The generation of electricity puts a strain on natural resources and the environment. Some plants use hydroelectricity, which benefits from the natural flow of water, but it also requires the installation of dams and equipment that can harm fish and wildlife. There are ways to lessen the impact, but these issues are still concerns you have to consider.

Older types of electricity production, such as nuclear or coal-powered plants, cause concern. Coal mining is often dangerous and can lead to illness in its workers. A mine collapse is always a risk. Plus, coal mining produces high levels of methane, which increases the risk of explosions.

Sustainable Plant Practices

When you have more efficient equipment, your plant is more sustainable. Wastewater is cleaned in a timely manner, which lowers the risk of raw sewage releases when a system is running. If you add in other beneficial measures like recycling water and recapturing methane produced during the treatment process for energy. 

Flowmaker’s Design and Features

When the goal is efficiency and lowering your plant’s carbon footprint, Flowmaker mixers and pumps are a must for all of the following reasons.

High-Efficiency Mixers:

High-efficiency Flowmaker mixers use a lot less energy by using specific flow patterns to move wastewater around for optimal mixing no matter how large or short the tank. In a sludge tank, they can move the flow effectively enough that nothing builds up in the corners. 

The impellers are also efficient and require less energy to run. Flowmaker mixers can operate so that the mixers work vertically or vertically. A horizontal mixer is going to assist with sedimentation.

Variable Speed Drives:

Variable speed drives are another benefit. When pumps and mixers run at a continuous rate, energy is wasted. You don’t want your system working at the same rate during high-peak hours as you would when people are sleeping and not running water. You waste energy. 

With variable speed drives, the pumps and mixers speed up and slow down as needed. It lessens strain on the equipment and also lowers energy consumption. Use electronic controls and even automation to adjust for changing flow rates. When you do this, you can reduce your energy consumption by as much as 50%.

Automation:

Automation and AI are all part of advancing technology that plays an important role in energy-efficient wastewater treatment processes. When there are sensors that track changes in things like flow rates and sludge, pumps and mixers turn on without human involvement. Automated systems automatically adjust Flowmaker mixers and pumps to account for these changes. This establishes processes that treat water correctly, quickly, and more efficiently than ever before. 

Lightweight Materials

Wastewater can do a lot of damage to components. Flowmaker mixers and pumps are designed to resist corrosion while also being lightweight. Because the propellers are lightweight, less energy is needed to turn them. They’re also going to last longer because they won’t rust or corrode and need replacement before you expect.

Other Considerations Your Treatment Plant Needs to Keep in Mind

The amount of energy you can save using Flowmaker mixers and pumps is dependent on several factors.

Your Wastewater Treatment Plant’s Design and Capacity

The size of your wastewater treatment plant will impact the amount of energy you save. The larger your facility, the greater the savings once you’ve incorporated Flowmaker mixers and pumps. Smaller plants may not see as much in savings, but they still will see some level of discounts on their operating expenses.

The Age of the Current Equipment

Switching older equipment to new technology will deliver cost savings. The older your equipment, the more energy it’s using. You could end up being surprised by how much lower your bills are. Plus, new Flowmaker mixers and pumps are going to do a lot more work, so you might find your treatment processes improve, which leads to faster treatment times and fewer problems with raw sewage releases.

The Type of Wastewater 

Wastewater quality also plays a role. If your district takes in a high percentage of hauled septage, you might have more solids than others. An industrial setting where there are a lot of food processing companies will also have higher levels of fats, oils, and grease. That means the mixers and pumps need to work harder.

Work With a Professional for Optimal Plant Efficiency

When you implement a Flowmaker mixer and pump features, you reduce your wastewater treatment plant’s carbon footprint by reducing the amount of energy your equipment consumes. Keep your system well maintained and enjoy a long-lasting, problem-free system that keeps lowering your electricity bills. In time, your equipment pays for itself from the savings you gain.

The U.S. Department of Energy established the Sustainable Wastewater Infrastructure of the Future SWiFt initiative. SWiFt 2.0 is the second phase that enabled another 100 wastewater treatment facilities to save up to 25% on energy costs using technology like renewable energy and resource recovery. With federal funding available for infrastructure improvements, it’s a good time to look at how to make your plant more efficient for the future.

Lakeside Equipment has other tips available to help you lower your costs while ensuring optimal wastewater treatment processes. Whether you add Flowmaker mixer and pump features or want to learn more about capturing methane to use for heating your building, we have solutions that fit your needs.

Industrial waste is cleaned before it is sent back to your company’s production lines, a local water source, or allowed to enter city sewers to go for treatment in your local waste district’s water treatment plant. As the wastewater produced in different industries can be full of pollutants, treating the water is important. The food industry may have high levels of ammonia, fat, and coliform bacteria. Power stations can have high levels of heavy metals. Treating water from these industries must be done correctly to prevent harm to people or the environment.

Managers and owners of industrial operations must carefully monitor and analyze each aspect of wastewater operations. Why? It’s important when it comes to your company’s bottom line. You need to make sure wastewater is treated effectively. You don’t want to risk releasing untreated overflow or water that doesn’t meet current guidelines for some reason. Fines for the release of untreated or poorly treated water can be costly both in terms of money and in damage to your company’s reputation. You also need to make sure you’re not wasting money on inefficient operations and excessive maintenance.

Optimizing industrial wastewater treatment is best done by paying attention to the data your systems collect. Use your operational data to look for trends and patterns in all stages of the wastewater treatment process. If you have updated wastewater equipment, it’s easy to capture data and analyze it. From there, you can predict trends, optimize your processes, and get the best practices in place for efficiency and cost-effectiveness.

What Can You Learn From Data Collection and Wastewater Analytics?

What can you learn as you analyze your data? There’s a lot to be learned. An efficient wastewater treatment plant is one that handles the highs and lows, doesn’t require a lot of maintenance and repairs, and provides real-time reports to ensure water meets standards before it’s recycled or returned to a body of water. Through predictive analysis, you should be able to get a better understanding of these five areas.

First, you’re able to see what equipment is not operating as well as it can. If you have machines that are often down for maintenance, it’s costing you money. It’s impacting your wastewater treatment processes. You’ve collected data and find that one piece of equipment struggles to keep up with flow rates. Upgrading may be what it takes to have a more productive wastewater treatment system.

Second, you can track energy usage and flow rates. There may be specific times of day that wastewater rates slow down and other times when they peak. If pumps are operating at the same speed during all of these changes, it’s wasting energy. You can cut energy costs by creating systems that better accommodate the highs and lows.

Third, you’ll see where chemicals are used and if they’re being overused or not used enough. This helps keep your chemical costs to a minimum while also meeting the requirements for the water quality being released to a body of water or reused.

Fourth, you can look at the wastewater you do have and see if there are better ways to reuse it or clean it for release into the environment. Recycling wastewater is one of the best ways to keep costs down. If you could reuse water several times, you’re saving money on water bills. You don’t want dirty water impacting production. Data and analytics help you find the right balance.

Fifth, the other benefit to analytics in wastewater treatment has to do with your equipment. Say you’re seeing data that shows one pump is often breaking down and needing maintenance. You can see how much extra time and money is being spent on repairs. You’ll know if the equipment is still worth keeping or if it’s time to replace it.

How Do You Collect the Data You Need?

Of course, there are hurdles companies face when collecting the information. If even one piece of equipment isn’t connected and communicating with the others, data will be missing. That makes it hard to get a complete picture of the treatment process and quality. Data management tools that connect everything become essential. You may need to invest in additional training so that you and your employees understand what the data means and how to use it to your advantage.

You’re probably already taking the first big step in collecting data at each key point of your water treatment measures. If you have a SCADA system like many industrial settings, you have access to important data. You’re seeing the flow rates as water comes into the screens and grit collectors. You get measurements of the pollutants in the water that’s being treated. Before it’s released, you can see the numbers and make sure they meet federal and state standards. Pair the SCADA system with modern control systems and you have all of the information you need to start analyzing your plants’ processes.

A Sharp Biological Nutrient Removal (SharpBNR) control system helps you monitor your system and adjust aeration as needed to balance the oxygen levels in the wastewater as it’s treated. The computerized control system continually monitors the system status and makes adjustments. Alarms go off if there are problems beyond the system’s scope.

SharpBNR can be partnered with your plant’s SCADA system. Within a SCADA system, you have sensors taking readings at different pieces of wastewater equipment. Readings typically include measurements for flow rates, suspended solids, pump speeds, and Dissolved Oxygen. Those readings are shown on a screen for supervisors and operators. Each screen, grit pump, basin, etc. shows yesterday’s flow and today’s flow. That data can be analyzed to look for unusual changes and peak hours.

As your system begins to analyze the numbers, it learns the necessary adjustments to effectively manage each component. You can also add motor starters and Variable Frequency Drives with the SharpBNR for optimal management. As this information is available from any authorized and connected computer terminal, you can monitor readings from your office and get alerts wherever you happen to be at that moment.

What does that mean? The system is going to be more reliable than it has been because the computer can monitor several components at the same time. Instead of having workers in different areas communicating what they’re seeing, the computer has all of the information in real-time. Adjustments are made by the computer, which continues monitoring the changes and making small adjustments until everything is running smoothly. That reduces energy costs at the same time.

You do need to keep the sensors clean so that the data that’s returned is accurate. While your maintenance team may not be doing as much on repairs, remember they’ll be beneficial at cleaning and calibrating older sensors. This ensures you have accurate information to use as you analyze your industry’s water treatment processes.

SCADA systems are great at real-time tracking and giving warnings of problems as they come up, the systems don’t do as well at predicting future problems weeks or months in advance. Smart analytics fills this gap. Analyzing the data carefully is one way to predict machines or components that are reaching their end-of-life stages.

How modern is your equipment? Would upgrading help you? If your older wastewater equipment lacks some of today’s computerized controls, it can turn data and predictive analytics into a time-consuming task. Talk to Lakeside Equipment about your current set up and learn ways to make your industrial wastewater operations more cost-effective and efficient.

Wastewater contains organic materials, but inorganic and organic solids also make their way into sewer and septic systems. How do these items get into the wastewater? It depends on the setting. Homeowners with a septic system may not realize the damage that’s caused by flushing tampon applicators or using too much toilet paper. Children may flush toys, coins, or marbles down the toilet and never tell their parents. In a city setting, items like candy wrappers or water bottles may blow into the street on recycling days and end up in storm drains.

When items like children’s small toys, plastic wrappers, and other personal products get flushed or go down a drain, it’s a problem. Whether it’s intentional or not, plastics, glass, and metal items do not break down. Items like paper towels, cigarette butts, and diapers may break down, but they do so slowly. If they’re not removed in the early stages of water treatment, it can block pipes and damage water treatment equipment. The screening process is an essential first step in any water treatment plant.

Wastewater treatment plants have screens to capture these items before they make it into grit removal systems, clarifiers, aerators, etc. Screens are also helpful in industrial settings like paper mills with wood pulp, wineries where the grape skins and pulp need to be removed before the yeast is added, or breweries where grains and hops need removal before yeast is added for the fermentation process.

Who removes the items from the screens that are getting blocked by these solids? That’s where a mechanical rake comes in. Rakes continually move across a screen to remove the items that are trapped. There are different types of rakes. One of the most efficient is the Lakeside Raptor^® FalconRake^® Bar Screen. How does this system work, and how does it compare to the Duperon FlexRake?

How a Bar Screen Works?

A bar screen is a vertical screening system with multiple rakes. Those rakes are on a link system that continually moves them around the vertical screen. The rakes are spaced evenly and continually rotate around the screen and tank floor. The screen captures items like plastics, sticks, logs, rocks, glass, etc. and the rakes scoop them up as it passes under the bottom of the screen. They travel up the back and are dropped into a discharge chute as the rakes pass back over the top of the bar screen. From there, items can be washed and recycled or composted, and the rakes continue in another circle to repeat the process.

When you’re looking at bar screens. There are a few things to keep in mind. First, look for construction that prevents corrosion. Stainless steel is the best. After that, you want to look at the placement of bearings, bushings, guides, and sprockets. If they’re underwater, repairs may be more common and difficult to manage. Efficiency and headroom are other factors to consider.

The Pros and Cons of the Duperon FlexRake

The Duperon FlexRake is engineered specifically to meet your demands in many of the same ways the Raptor^® FalconRake^®  Bar Screen does. The link system can hold up to a total of 60,000 pounds, which is impressive. The links are self-lubricating, so the maintenance is minimal. Gear motors are also sealed to help prevent excessive wear. Bearings, bushings, guides, and sprockets are in higher positions to also reduce the risk of jamming, which can lead to excessive maintenance or repair. It’s also designed to avoid jams when the debris is larger than usual. If something larger goes through the screen rake, you do not have to shut it down and have someone manually remove it.

The bar screen is cleaned automatically. That makes it possible to run it 24 hours a day without having a person to operate it. It’s installed in a vertical or almost vertical position. The motor is low RPM and energy-efficient.

There are several models available. Some are better for industrial settings like food processing plants and breweries, others are ideal for wastewater plants. To find the right screen rake, you need to look at the bar opening (as small as 1/5th of an inch up to just over an inch). Look at the installation angle, too.

How Does the Lakeside Raptor^® FalconRake^® Bar Screen Compare?

How does the Lakeside Raptor^® FalconRake^® Bar Screen compare? Much of it, including the chain link system, is crafted from stainless steel, and you get a choice. You can choose 304 stainless steel or 316. Both provide protection from corrosion, but 316 has more nickel and offers more protection in water that is chlorinated or contains more chlorides. If you treat water that has high chloride levels, consider 316 for the best protection from corrosion.

The drive system is low horsepower and incredibly efficient. Lower electricity costs in your municipality by choosing this bar screen. Variable speeds ensure comprehensive cleaning of the screen. The rake is stainless steel, and the ultra-high-molecular-weight polyethylene scraper is also durable and long-lasting. Teeth on the rake fit into the screening for optimal removal. If you’re worried about possible damage happening, don’t worry about it with this model. The bearings, bushings, guides, and sprockets are located near the top to reduce repairs from jams. It’s very unlikely that this bar screen system will need repairs. If it ever does, the drive system is above the water, which makes it much easier to manage.

With over a dozen rakes working together to remove solids, it’s an efficient removal process and headloss is minimal. It’s also adjustable, so you can space the bars to meet your needs. Bar spacing can be as little as ¼th of an inch to much larger sizes. You can also have a cover added to minimize odors. Teardrop-shaped bars are optional and reduce headloss even more. There’s also an optional weather protection system and explosion-proof design to provide peace of mind. Our Lakeside experts will help you determine the appropriate bar screen.

Where should you use the Raptor^® FalconRake^® Bar Screen? It’s useful in industrial and municipal settings. It’s an ideal screening system in a wastewater treatment plant. You can use it in your pump stations or sewer overflows. If you own a brewery, winery, or food processing plant, it’s good in those settings, too. As the system is customized to match the depth you need, you’re certain to have a screening and rake system that matches your needs.

Pair the Raptor^® FalconRake^® Bar Screen with a Raptor^® Wash Press to clean, compact, and dewater the items that the bar screen removes. The Raptor^® Wash Press cleans and presses the trapped materials to reduce the volume and weight of materials that go to the landfill. Lower volume and weight mean less money spent disposing of these items in a landfill. It also helps reduce the amount of waste going to the landfill.

For more than 90 years, Lakeside Equipment has provided solutions for treatment plant designers and engineers. Lakeside’s experience with water purification and water treatment processes cannot be matched. Our engineers will design a system that meets your needs and matches your budget. Our goal is to design a system that is built to last, and should you ever need parts, we have a stellar parts department who are happy to help you.

For more information on how you can achieve Lakeside quality and performance, contact one of our experts at 630-837-5640, email us at sales@lakeside-equipmnet.com or visit our website www.lakeside-equipment.com

The odors that come from a wastewater treatment plant aren’t always pleasant. People who live near the plant may start to wonder just how safe it is to have windows open and be breathing those smells all day. What about the fecal matter that’s found in wastewater? Can any of it fall on the surfaces in their home and lead to health issues? When they’re not sure, they come to your plant managers or the district with concerns.

As the plant manager, you’re not sure how to answer. Do they have valid concerns? You can’t dismiss them, so what do you tell them? Here’s what you need to know about the safety of living near a wastewater treatment plant.

What Studies of Air Quality Find?

So, what are the risks? Is your plant releasing bacteria into the atmosphere that makes your community members sick? It’s not likely.

A study was performed in Greece to find out exactly how much pollution impacted residents who lived near a wastewater treatment plant in Patras. The plant’s basic set-up included screens, grit chambers, outdoor primary and secondary settling tanks, outdoor chlorination, and indoor sludge treatment.

The study looked at a 1,640-foot radius and only focused on people who lived in their homes for at least eight hours per day. Once a week for an entire month, samples of the air were taken in six different neighborhoods. The samples were collected in the morning, afternoon, and evening to account for different flow rates coming into the treatment plant. Researchers also collected notes on the temperature, weather conditions, and humidity levels.

Once samples were collected, they were delivered to the processing lab within two hours. Bacteria were treated and allowed to incubate for the next 24 hours. At that point, an expert analyst looked at each to count any colonies that had formed. In bacterial colonies that did form, around 36% were Strep, 29% were Staph, 21% were not identified, 9% were E. coli, and 5% were Enterococcus. Salmonella was not found. All had less than 800 colony-forming units per cubic meter each day.

While the researchers identified airborne contaminants, there were very low concentrations. The two sampling stations that had the highest concentrations were right near the wastewater treatment plant.

This sounds concerning but consider this. An NSF International Public Health and Safety Organization study of germs in the household found Coliform on 3 out of 4 kitchen sponges or dish rags. Coliform was found on almost half of the kitchen sinks in the study. The bacteria were also found on 3 out of 10 counters and 2 out of 10 cutting boards. There were more Coliform colonies on toothbrush holders than there were on bathroom faucet handles.

Bacteria thrive in warm, moist environments. It’s why more bacteria are found in sponges than on a computer keyboard. If a homeowner isn’t constantly sanitizing their sponges, towels, sinks, and bathmats, Coliform is likely already in their home. Bathrooms and kitchens are the most common areas to find bacteria, but it’s not limited to those areas.

Coliform bacteria are not the only bacteria in the home. Pet toys and pet bowls turned out to be a significant source of Staph. Staph was also commonly found on game controllers and remotes. The five germiest items in a household were the kitchen sponge or dishrag, the kitchen sink, the toothbrush holder, pet bowls, and the coffeemaker’s water reservoir.

Plant Upgrades Help Lower Odors and Airborne Contaminants

Go back to the days of Hippocrates for some of the earliest evidence that airborne pollutants can impact health. As early as 460 B.C., Hippocrates notes that men were becoming sick after being outside and breathing smelly air. The smells were likely from composting materials in swamps and ponds during the warmer summer months. That helped spark changes leading to more sanitary ways to dispose of those killed in wars or human waste in camps and communities.

Fast forward dozens of centuries later. Today’s wastewater treatment plants do everything possible to lower the risk of airborne contaminants. Through the use of tank covers, it can help stop hydrogen sulfide and methane from being released into the air. Covers also help keep debris like leaves, dust, and tree pollen from getting into wastewater basins. Are these covers enough, or do additional steps help reduce the risk of airborne contaminants?

You do need to start by determining where the odors come from. Check everything from the pump station to the settling tanks. It could be one specific area or several of them. Your findings help you determine the best solution. If you use open screw pumps to move wastewater from one location to the next, odors will escape. Switching to closed screw pumps stops the smells from releasing.

Some wastewater plant upgrades can help lower the odors of your plant. One of the first to consider is covers. A gas-tight cover stops hydrogen sulfide from entering the environment. Whether you choose aluminum, steel, or fiberglass, you can get retractable covers, floating covers, or flexible geomembranes. How do you choose the best one? Consider these factors.

• Is it airtight?
• Can it stand up to environmental factors like temperature changes and weather conditions?
• Will it make your employees’ jobs more difficult?
• Does it impact your plant’s safety?
• How easy is it to get a custom cover that matches your plant’s needs?

These covers become a money-saving step to take as it also keeps algae from growing, and it adds thermal protection in the winter. When you add a gas collection cover, the methane produced during wastewater treatment is captured and can be used to heat and power your plant. That lowers operating costs.

Deodorizing misting systems throughout the plant help neutralize the smells. Another option is to start adding chemicals that react with the compounds that cause the odors. Adding an air purifying system that captures the air, filters it through biofilters or carbon filters is also helpful. Once the air is filtered, it can go out into the atmosphere without leading to unpleasant odors.

While each of these methods will help, a cover is highly effective. You may find you need multiple plans to combat odors. Don’t get discouraged. Weather extremes are changing average annual temperatures and conditions. Smells may be worse in high humidity. A windy day may make the odors travel farther than usual. If you’re having a hard time figuring it out, don’t forget wastewater equipment specialists have the answers you need.

Keeping the people in your wastewater district is one of the best ways to ensure they’re happy. If water costs are low, they’re less likely to complain. Covers are the most cost-effective solution in a wastewater treatment plant. If you don’t have covers on your tanks, you should consider them. Talk to Lakeside Equipment about equipment upgrades that help reduce odors and lower your operating costs.

Also, keep them informed. If there are more odors in the summer, explain why and assure them it’s temporary. Be honest and reassure them you’re doing everything possible to lower the smells that are emitted. Offer free tours, show why the odors occur, and listen for feedback. If you’re still not sure how to help reduce the odors that bother your neighbors, Lakeside Equipment’s specialists help you find the right solutions to incorporate in your wastewater plant design.

You’ve heard the term, but what is an Archimedes screw pump? How is it used in hydropower or waste treatment? Why is it called an Archimedes screw pump? Did he invent it? We have answers to all of your questions.

The Archimedes screw has been used for ages to move water from a place of lower elevation to another at a higher elevation. Originally, it was operated by hand. Today, the pumps can be powered by wind energy, solar power, or an electrical motor. They move more than water, though that was the original purpose.

Why is it called an Archimedes screw? Historians believe it’s because Archimedes, an Ancient Greek engineer, inventor, and physicist, invented the system. Not only did he develop the technology behind a screw pump, but he also created compound pulleys. How were people in those times using his screw pump?

1. It was used to continually drain water from a bilge on the Great Ship of Hieron, the King of Syracuse. Syracuse was the city in Sicily           where Archimedes was born. Onboard, one man was assigned the task of turning that screw pump to keep draining water from the ship. This screw moved water from a lower point to a higher one.
2. It became the ideal way to move water in the Nile Delta for irrigation. While crops were grown on banks high above waterways, screw pumps would draw water from the rivers to make sure crops didn’t dry up in the arid region.
3. Another early use of the Archimedes screw pump was to remove water from deep           within Egyptian mines to protect the miners. With water pumped away from them, the risk of drowning reduced as workers went underground to mine everything from copper to gold.

How Do They Work?

How does it work? Wouldn’t gravity pull the water right back to the water source? An Archimedes screw system has a large screw that sits within a cylindrical shaft or sits in an open chute. The bottom thread of the screw sits in the lower water source and scoops some water. As the crank turns the screw, the motion forces the water to propel to the next thread.

Each turn continues propelling the water further up the screw conveyor until it reaches the place where it is deposited. As long as the motion continues, the water will keep propelling to the top and get deposited to the higher area. The speed of the pump and the width of the threads help determine how much water can be moved.

Archimedes screw pumps move more than water. They can move plastic pellets, grains, sludge, and other fluid items. If an item is fluid enough to move, a screw pump with the right dimensions and pump speeds will move them from one level to the next.

Examples of Places Using Archimedes Screw Pumps

You’ve probably seen Archimedes screws at work. They’re used in snow blowers to propel the snow through the chute where it can be directed to a bank or roadside. They’re used in chocolate fountains to push the melted chocolate to the top of the fountain where it flows down the tiers and back to the heated collection pool where it travels back up and repeats the process.

You’ve likely seen farm equipment that shoots ground up corn into a farm truck where it’s transported to silos. The corn that shoots out of the raised tube reaches the top of the chute thanks to an Archimedes screw pump aka screw conveyor.

In England, there is a man-made white water rafting center called Tees Barrage. Visitors learn about white water rafting in two long courses. Four Archimedes screw pumps move close to 3,700 gallons of water each second to create the river. The pumps move the water from the lower pools to the top of the course creating close to 1,000 feet of white water before a tremendous drop. When you’re done, you can use a conveyor to follow the water back up to the top while in your raft and tackle the course all over again. As long as the pumps are doing their job, the water will keep flowing in an endless loop.

Windsor Castle’s power is supplied through Archimedes screw pumps. A 40-ton screw pump brings water from the Thames to two turbines that have gearboxes and generators to convert the energy of the water to electricity used within the Queen’s castle.

The screw pumps at Windsor Castle generate around 1.7 million kWh each year and are estimated to help reduce carbon dioxide emissions by more than 1.74 million pounds. It’s a green way to bring power to a huge castle and could easily do the same for hundreds of homes. If your town or city is looking into energy-efficient hydroelectric systems to provide power to homes and businesses, screw pump turbines are a must-have.

Archimedean screw pumps are used in waste treatment plants. As the gap between the screw blades is wide, they can cut through solids without clogging. The process for cleaning sewer and septic liquids involves several steps.

Wastewater enters the plant from trucks that pump it out at homes with septic systems or through the sewer where it’s pumped into the primary settling equipment. Screens remove some of the material, such as grease chunks, where they travel by truck to landfills. Grit is removed and also taken to the landfill. The remaining sludge is pumped into aeration tanks. Additional solids are also removed by truck. The liquid goes to another settling tank before it’s disinfected and pumped out to waterways.

What about the sludge? Archimedes screw pumps help there too. The sludge is pumped into digestion tanks where resulting methane gas can be used to provide power. Water separated from the sludge continues to aeration and disinfection. The design of a water treatment plant may vary depending on a town or city’s population and the acreage your plant has available.

They can pump stormwater, drain waterlogged land, and are useful in industrial settings where water needs to move from a low area to a higher one. A screw pump can also be a big help at separating the water from the sludge.

Open vs. Enclosed Screw Pumps

What about the screw pumps themselves? What are your options? There are two types of Archimedes screw pumps. If the screw is enclosed in a pipe, it’s an enclosed screw pump. With an open screw pump, the screw sits in a concrete trough and is open to the environment.

Why would you want one over the other? Enclosed screw pumps are quicker to install. You don’t have to build the trough from concrete and wait for it to cure. You could use a steel trough instead, but there is still going to be the installation time to consider. With an enclosed screw pump, the screw is already situated in a tube. It’s a quick and easy drop-in placement, which also makes for fast replacements.

An open screw pump needs space. If your water treatment plant, hydropower plant, or other business doesn’t have a lot of acreages to work with, you’ll need equipment that takes up less space.

Enclosed screw pumps come in a choice of Type C or Type S. Type C has the screw sitting within a tube that rotates. As a result, the Type C pump can sit at an angle of up to 45 degrees, which takes up less space. Type S must be at a 22 to 40-degree incline as the tube is stationary. You can opt to mount the tube on a pivot to allow it to be raised or lowered to change the pumping rate. Other advantages are:

• Higher efficiency
• Option for drop-in replacements of older equipment
• Lower installation costs

With an open screw pump, the trough needs to be at an incline of 22 to 40 degrees. The screw has upper and lower bearings that help it rotate. There’s also the drive assembly. Self-aligning bearings can be submerged or not and keep maintenance to a minimum by having permanent lubrication to prevent wear and tear. You also gain these benefits when choosing an open screw pump:

• Up to 75% efficiency for most of the operating capacity
• Do not close or need pre-screening
• Minimal maintenance

Factors to Consider When Choosing an Archimedes Screw Pump

An Archimedean or Archimedes screw pump is designed to meet your needs, but you need to consider a few factors when making your final choice. Working with an expert in screw pumps ensures you get a cost-effective design with maximum efficiency and output.

Start with the capacity you’re aiming to meet. How much liquid are you moving from one flight (level) to the next? This needs to be clear several other factors are considered in order to ensure the screw pump design matches your goals. If you pick a screw pump with too small of a screw, the capacity will be affected by the smaller diameter.

As the screw pushes the liquid up the trough or tube, the angle cannot be too steep. If you have too steep a slope, the liquid will continue to leak back to the lowest pool. Most screw tubes are set at an angle of 30 to 38 degrees, but Lakeside Equipment can get you to an inclination of 22 to 40 degrees if needed. To keep the incline at the right angle, you’ll need to have enough flights to maintain that level of incline. Your capacity increases by around 25% for each flight you add to your design.

How fast do you need the screw pump to work? If the screw isn’t rotating fast enough, the liquid will overflow and return to the bottom chamber. If it’s too fast, it can be just as wasteful. Screw speed is the number of revolutions that screw makes each minute. Finding the right screw speed helps the system remain efficient and lowers energy use. The correct horsepower helps here. You need a pump motor that lifts the liquid at the right rate and handles your desired capacity. Lakeside Equipment believes you should never choose a pump with requirements that exceed 90% of the recommended HP listed on the motor.

How deep is the level of water or liquid you’re pumping? An open screw pump will work whether or not the bottom of the screw is submerged in water.

The screw itself is something to consider. You can get screw pumps in single, double, or triple helix designs. The tighter the threads on the screw, the more fluids the screw will grab and propel upwards. A single helix has the threads farther apart so the output is lower. A good rule of thumb is to expect output to increase by 25% for each helix you add. Triple helix designs are best when you have multiple flights, and a single is best when you only have one flight.

Screw speed impacts efficiency. You don’t want to exceed the maximum screw speed or you risk cutting efficiency by increasing your plant’s electricity usage. If this happens, it’s best to install multiple screw pumps to handle the extra load.

The final factor to consider is safety. You don’t want a worker getting injured falling into equipment. Safety measures must be part of your plans. Handrails, stairs, and barriers are all important. The power controls also need to be placed so that the screw pump doesn’t turn out at the wrong time. You want qualified engineers working with you to make sure safety is a key component in your design.

Lakeside Equipment sells both open and enclosed screw pumps. Lakeside Screw Pumps are made in the U.S. and designed to be around 70% efficient, which reduces your energy use. We pride ourselves in supplying affordable screw heads that remain easy to use and maintain. Give us a call. We can help you find the right Archimedes screw pump for your needs. Reach us at (630) 837-5640.

Not every city is built on level terrain. When wastewater is at the bottom of a hill, sewage isn’t going to flow up the slope to the wastewater treatment plant magically. Instead, it collects in a basin and must be pumped up the hill through a force main. This pipe carries the pumped wastewater uphill until gravity is able to help the wastewater reach the treatment plant.

That’s one reason why someone would be looking at industrial sewage pumps. You could be a business owner and need a sewage pump for your paper mill. You have chemicals and wood pulp fibers in the wastewater, so you have to consider those factors.

Industrial sewage pumps do this, but how do municipalities and industrial sites choose the correct sewage pumps? How do you find a sewage pump that doesn’t clog, consume too much power, or need excessive hours of maintenance? Our guide to the best industrial sewage pumps helps get you started.

Tips for Choosing a Sewage Pump

It’s time to start narrowing your options. Don’t focus as much on a specific brand at first. It’s better to decide what size pump is needed and the features you need. Then, you’ll need to consider your immediate budget and how much money you plan to spend on energy costs and maintenance for that pump. Ask yourself these questions.

Why Do I Need the Industrial Sewage Pump?

Your primary focus should be your goal for the sewage pump. Why do you need one? Is it for a new system, or are you replacing old equipment?

If you own a food processing plant, you may need a different sewage pump than a hotel would need. A hotel would be moving wastewater from the basement to the sewer main. But, a food processing plant is moving wastewater and materials such as animal blood, fat, or vegetable scraps.

Is It a Replacement?

Are you replacing an old, broken sewage pump? If so, was the one you had adequate for your needs or was it too small? If it was too small, it’s time to upgrade to a bigger pump. If it’s a simple replacement and the current size works for you, you could look at a similar industrial sewage pump when you’re researching.

In a growing municipality, you have to plan for additional growth, too. You might have 10,000 residents right now, but buildings are going up, and soon the population will reach 20,000. Your system must consider this growth. By planning ahead, you may pay more for equipment now, but as the population increases, you avoid having to upgrade equipment sooner than expected.

What Kind of Flow Rate Do I Expect?

How much sewage is being pumped each hour? Divide that number by 60 to get the minimum gallons per minute. You need to have an idea of the number of gallons per minute. You also have to consider the height and distance of the sewage being pumped. Lower horsepower may be cheaper to run, but it may burn out faster and require replacement sooner. If a pump says 1,150 GPM at 134 feet of max head, it could move 1,150 gallons a total of 134 feet each minute.

If it’s a small amount and isn’t traveling hundreds of feet, you may not need a pump with the highest possible HP motor. In a small brewery, the wastewater you’re pumping may only increase on brewing days. In that case, you may want to consider if you want an automatic or non-automatic sewage pump.

An automatic pump will turn itself on and off, while a worker must control the non-automatic. Generally, a non-automatic sewage pump is best when you know precisely when a pump needs to run and for how long.

Along the same lines, there are low-pressure and high-pressure pumps. Moving water from a residence to a sewer line is an example of a situation where a low-pressure pump may be best. High-pressure systems may be better in busier settings.

What Is My Budget?

You do have to consider your budget. If you’re aiming for a low-cost pump to save money, be careful that you’re not going to end up spending more on maintenance each year. The same is true of an expensive pump. A higher price doesn’t guarantee longevity. That’s why it’s best to work with a company that will help you get the best quality for your budget.

If you’re worried about the cost, you should also think about ways to save money. Solar panels are an initial investment, but tax incentives may make them worthwhile. The savings on energy can pay for the cost of the solar panels in just a few years. Wind power is another option if you’re looking to invest in renewable energy.

Could a Screw Pump Be the Best Choice for Industrial Sewage?

Archimedes screw pumps have the power to move sewage at a constant speed without clogging or needing a grinder pump. They can be up to 75% efficient, which lowers electricity bills. They’re suitable for moving wastewater in an industrial setting and come in two types.

• Enclosed – An enclosed screw pump puts the screw mechanism in a tube. In a Type C Screw Pump, the tube rotates and can handle an incline of up to 45 degrees. A Type S Screw Pump inclines from 22 to 40 degrees and uses a stationary tube that can pivot.
• Open – There’s also an open screw pump that is exposed to the environment. The screw mechanism sits in an open concrete trough at inclines of 22 to 40 degrees. One of the benefits of this product is the low-maintenance design that uses permanently greased bearings.

How does a screw pump work? Some systems have a pool or trench at the bottom for the sewage or wastewater to pool. The screw turns and propels the water up the blades of the screw. Once the sewage reaches the top, it deposits the liquids out of the top of the trough or chute.

Not every industrial setting is best served by an Archimedes screw pump, but if you could use one to move your sewage, it’s a cost-effective, trouble-free system to consider. If it would help you, the best screw pump design is determined by your available space and the reason for the sewage pump.

Ask an Expert in Wastewater Purification to Help

Choosing the best industrial sewage pumps isn’t a decision to rush. To ensure you get a pump that will last and not consume ridiculous amounts of energy, ask an expert in wastewater technology for advice. You don’t have to have the answers. You can turn to the pros to help you find the best industrial sewage pump. If you need an entire system designed or components upgraded, there’s no better place to start than with Lakeside Equipment.

Lakeside Equipment has a team of engineers ready to help you with your industrial wastewater system design. Our company started back in 1928 and has specialized in water purification ever since. Call us to learn more about our line of Archimedes screw pumps and other water treatment equipment.

Water treatment dates back to at least 4000 B.C. Ancient Greek documents discussed purifying water by running it through charcoal, exposing it to the UV rays of the sun, and boiling it prior to consumption. This was done to kill bacteria, remove odors, improve taste, and eliminate cloudiness.

There are also historical records showing that Ancient Egyptians added alum to water to help clarify it by suspending the particles floating in it. In the 1800s, the cholera outbreak in London was found to stem from sewage that got into a well used for drinking water. Louis Pasteur would be the person to show how bacteria in the water could cause disease in people.

Our water today is cleaner because of the world’s history and discoveries along the way. Today, activated charcoal, or activated carbon, is one of the components used in water filtration systems. In 2017, activated charcoal was a major player in water filtration, but substances like olive pits, shells from nuts, and coconut fibers are also being used. Before the year 2025 ends, it’s expected that the global activated carbon market will be worth more than $6.6 billion.

How Activated Carbon Filters Water

You’ve heard of the term absorb, which is to soak something up. Activated charcoal or carbon is a little different. It adsorbs odors and substances from liquids. Instead of absorbing these odors and substances, it bonds to them. That’s called adsorption.

A process using oxygen turns charcoal very porous. Those tiny pores trap and hold the substances that cause off-colors and odors in water. It can trap and hold things like chlorine, toxins, and even some prescription drugs that make their way into water sources.

In a household, you might have a water purification system like Brita or PUR that attaches to your faucet or a water pitcher and removes impurities and odors from your tap water. People often use them to remove the chlorine odor and taste that remains in public drinking water.

In a water treatment plant, crushed activated carbon or charcoal can help remove excess chlorine, organic materials, and other impurities. To do this, the crushed carbon is added right to the water where it removes the contaminants and then is removed after it settles with other sediments in holding tanks. Once it is removed, it can move to compost areas or landfills.

Sometimes, activated carbon pairs with a UV disinfection system to aid in the removal of chlorine and other compounds that affect the taste and smell of water that’s been treated.

Placement of an Activated Carbon Filtration System

The Environmental Protection Agency lists two ways to implement an activated carbon filtration system in a water treatment plant. One is a granular activated carbon filter that is added after the rapid mix, flocculation/sedimentation, and filtration steps. Water flows into the granular activated carbon filter once the water has been in the filtration tanks. This is known as post-filtration adsorption.

The second placement is as part of the filtration tank. The granulated charcoal sits in the bottom of the filtration tank where it filters out odors and other contaminants. In this type of system, you have the rapid mix, flocculation/sedimentation, and filtration.

It’s Important for Water Treatment Plants to Keep Up With Regulations

Regulations on water quality and purification change regularly. At the moment, the EPA has regulations in place for more than 90 contaminants. The public can request that it gets added to the Contaminant Candidate List (CCL). This request list is published at EPA.gov and accepted nominations for additional contaminants at the end of 2018. Verdicts on whether or not the contaminants were added or not are also published on the EPA’s site under Current and Previous CCLs.

The last update for the National Primary Drinking Water Regulations was released in 2009. As more items are added, water filtration plants have to keep up with the changes and make sure their equipment and tests look for those new contaminants. Activated carbon filtration often helps remove some of these new contaminants.

Lakeside Equipment has one piece of equipment that’s an essential part of any water treatment plant. Look into the stainless steel or PES filter cloth screening that’s part of the MicroStar Filter. This final step in water treatment runs your cleaned water through the filter cloth and backwashes any remaining contaminants into a central hopper where it is discharged. It’s an energy efficient step in the final stage of water filtration.

Learn more about the MicroStar Filter and Lakeside Equipment’s other clarification and filtration equipment. Our experts can help you find the right water filtration system at the right price. We’ve been in the water filtration business for more than 90 years and are happy to share our expertise with you. Call 630-837-5640 for more information.